Auxiliary air-inlet device for internal-combustion engines.



J. E. THEBAUD. AUXILIARY AIR INLET DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED SEPT. 17, 1913.

Patented Dec. 15, 1911 INVENTOR snares ra rnirr onirr 30H EDWARD THEBAUD, OF BUFFALO, NEW

YORK.

A'ULECELIA'EY AIR-INLET DEVICE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Dec. 15, l

Application filed September 17, 1913. Serial No. 780,248.

invention relates to manually operflevices adapted to admit extra air to scous mixture in a manifold pipe used with internal combustion engines.

the 9' The objects of my invention are to prons. under the control of the operor admitting and governing the ad- :i additional air to a gaseous mixs og through a conduit or manifold e on its way from a carburetor to the cylinder of an internal combustion engine, a to incl o .28 vaporization within said mixture and to provide means for admitting said addition; air in flat streams, or ribbon-like curre a. transverse to the stream lines of fluid coming from the said carbureter, hout materially decreasing the area of low through said pipe with any obstruc- :rfnatic elevation showing the relapontion of my invention to the steeringu engine cylinders, manifold pipe and rcier or an automobile, when installed .Lpon the same. Fig. 5 is an end View of er on, which form part of this specifics gine.

said valve showing same attached to a section of a manifold pipe.

In Fig. l, l is the casing of the said valve in which is slidably mourned the plunge Passing through the plunger r outer end is a bolt 3. nmvide i i head a with a hole through which 5 wire an Between t wire ger 2 and surround the bolt lar piece 6. By means of the nu 5 is clamped between the head is tubular piece 6. The wire 5 is ada'p d reciprocate within the flexible tube 8, which is'positioned within a clamp 9 and held there by the screw 10. Fixed in the plunger 2, is the pin ll, adapted to reciprocate in the slot 12, in. the casing 1. Integral with the casing 1 are the cars 13 and lei, having rospective holes 15 and 16 adapted to receive a U-bolt. Projecting from the casing 1 is a closed tubular projection 17, the outer end of which is conical and is slotted at right angles as shown at 18 and 19. Surrounding the said projection 17, is an adapting washer 20.

In Fig. 2, the plunger 2 is shown having; a

spring lip '21, adapted to engage and pressagainst the inner wall of the casing l. The inner end of the plunger 2 is longitudinally slotted. Projecting above from the casing 1 is a cylindrical portion 28, which is internally threaded at to receive a pipe. 1 5 is a circular boss integral with the said casing 1 and surrounding die tubular projection 17.

In Fig; 3, the position of a slot 26 in the end 22 of the plunger 2 is shown, The free end of the lip 21 is shown partially raised, as is. the case when the said phu'iger .2 is not confined within the casing l of said valve. 27 is a hole in said plunger 2 adapted to receive the said bolt'E-l. It will be observed. that the end of the plunger 2, containing said hole 27, is flattened on each side transverse to said hole 2?.

In Fig. 4, 28. 29, 3-0 and 31 represents combustion cylinders of an automobile en- 32 is a carburetor. 33 is a manifold pipe having branches 3% and leading to said cylinders. 36 is a steering-post upon which is mounted a clamp Fir-led to an extension 39 of said clamp 37, is a flexible tube 8. The lower end of said flexible tube 8 is shown fixed within the clamp 9, on the mounted upon said manifold pipe 33, in a manner to have the tubular projection 17 shown in Fig. 1 pass through the wall of said manifold pipe in Fig. 4. IVithin the flexible tube 8 is the wire 5, fixed at its lower end tow the plunger 2 and pivoted at its upper, end to the said L-lever 38.

In Fig. 5 the tubular projection 17 is shown penetrating the wall elO'of a section of the manifold pipe. Surrounding said wall 40 is a U-bolt 41, passing through the ears l3 and 14: of said valve and binding the same to said wall 40 by means of the nuts 4:2 and 43. In. this figure is shown the use of the adapting washer 20 which con forms to the curvature of the said wall 40.

Between said adapting washer 20 and said 2, to open the special slide valve, positioned upon the manifold pipe 33, to admit air to the gaseous mixture within saidpipe. As the airis drawn into the said mixture through-the said valve, it passes through narrow cross slots, such as 18 and 19, shown in Fig. l, and thereby enters in flat or ribbon-like cross'streams or currents, tending to break up any stream lines of gasolene coming from the carbureter 32 and causing the gaseous mixture to be more thoroughly mixed andvaporized before it enters the cylinders of-the' said engine. When the said engine is performing heavy duty, the valve is full open, but when the engine is carrying only light loads the amount of air admitted through this special valve is controlled by the position of the slot 26, of the plunger 22, according as this slot 26 is eclipsed by the inner Wall ofthe tubular projection 17. By the use ofythe slot 26 it is. possible to manually control and grade small quantities of air entering-themanifold pipe, in a manner to obviate the necessity of any delicate manipulation' of the lever 38, in its angular movement. The control thus afforded the chauffeur in running his engine has, upon trial of'this device, proven very satisfactory. The admission of th air in one or more fiat or ribbon-like streams or currents, transverse to the path of the gaseous mixture passing through the manifold pipe, not only tends to perfect that mixture, lending to complete combustion, but results in a more complete vaporization of the combustible fluid and uniformity of mixture. With the use ofthis device, I have been able to increase the mileage run per gallon on, various automobiles. I believe this result-is due in a great' measure to the fiat streams of ai-r emerging from the slotted ends of the tubular projection 1?, creating favorable internal adverse currents within the said mixture.

I am aware that other valves, manually operated, are in use for governing the admission of auxiliary air to the gaseous mixwith air ports, a plunger adapted to reciprocate Within said chamber to afford a closure across one of said air ports, a tubular projection from said casing affording a chan-' nel between one of said air ports and said manifold pipe, said projection being covered by a conical cap, said conical cap being provided with a slotted aperture, means to manually control the'plunger and means on said casing adapted to secure said slide valve to said-manifold pipe. I

2. In a device affording means for manually controlling the admission of air to the manifold pipe of an internalcombustion engine, a slide valve comprising a casin having a longitudinalchamber provide with air ports, a plunger adapted to reciprocate within said chamber to afford a closure across one of said air ports, said plunger being provided at its inner end with a long1- tudinal slot, a spring lip upon said plunger positioned midway of its ends and adapted by contact with the inner wall of said chamber, to cause said plunger to seat tightly over one of said air ports, a tubular projection from said casing affording a channel between said chamber and said manifold pipe, said projection being covered by aair ports, a plunger adapted to reciprocate within said chamber to afford a closure across one of said air ports, said plunger being provided midway of its ends with a spring lip adapted to contact the inner wall of said chamber to cause said plunger to seat tightly,over one of said air ports, a tubular projection from said casing affording v a channel between one of said air ports and a manifold pipe, said projection being covered hv conical cap, said conical cop being provided with a transverse slotted aperture, means to manually control the plunger and other means on said. cnsi ed plied to secure said slide valve to said manifold l. In a device affording means for manually controlling the admission of air to the manifold pipe of an internal combustion engine, a slide valve comprising at casing having longitudinal chamber provider oorts, a plunger adapted recipro- 1 id chamber to afford a.

r said air ports, J f pure-sided midway of lip adapted to contact the inner wall to cause plunger to over one of said ports, a from. said plimger, and in sliding engagement with a longitudinal in said casing, a tubular projection from said casing afiording a channel. between said chamber end said manifold pipe, said projection being covered by a conical cop, said conical cap being provided with a transverse slotted aperture, means to manually control the plunger and other means on sai casing; adapted to secure said slide valve the said manifold pipe.

5. In a device affording means for manually controlling the admission of air to the manifold pipe of an internal combustion engine, a valve comprising a casing having an internal chamber provided with air ports, closure means adapted to transverse one of said air ports, a tubular projection from said casing affording a channel between sai chamber and said manifold pipe, a cap cov ering the extremity of said projection, said cap being provided with a narrow slotted aperture whereby air, on passing through said aperture, enters said pipe in-- a relatively broad and thin solid stream, and means adapted to manually con rol said valve.

' air, on passing 6. In a device affording means for controlling the admission of air to the manifold pipe or an internal combustion engine, it Valve comprising a casing including an air port, closure means to traverse said air port, means establishing communication between said air port and said manifold pipe, on ele-- ment disp sed in the line of said communication between the said air port and the said manifold pipe, said element being provided with a narrow slotted aperture, whereby through said aperture, enters said pipe in a relatively broad and thin solid stream, and means adapted to control said valve.

in a device aiiording means for conroiling the admission of air to the HlttlllfOld pipe or an internal combustion engine, a valve comprising a casing including an a r port, closure means to traverse said port, means establishing communication between said air port and said manifold pipe con sisting of a hollow pro'ecti0n from said casinn, a cap covering the extremity of said projection, said cap having a narrow slotted aperture, whereby air, on passing through said aperture, enters said pipe in a relatively broad and thin solid stream, and means for controlling said valve.

8. As a new article of manufacture, a valve comprising a casing provided with an air inlet port and an air discharge port, a. closure for said air inlet port, and a concavo-convex cap at the discharge port provided with a relatively nor-row slot whereby a relatively broad and thin solid stream of air may be forced across the path of the stream line of gasolene globules passing through the manifold pipe of an internal combustion engine.

Buii'slo, ll. Y. Sept. 15, 1913.

JOHN EDW'ARD THEBAUD.

Signed in the presence of i. ELMER Mron'rou, Grows A. (Dorms. 

